FIG 2. Pressure-thermodilution tracings during an injection of sodium chloride solution over 2 seconds (20 mL/s). At the time of the injection, increase in pressure increases suddenly and quickly; this change is followed by a decrease in temperature. The return of the temperature returns to baseline values is slightly slower than that of pressure. 
temp indicates the maximum decrease in temperature; T temp, time required to obtain the maximum decrease in temperature; and 
, shift between the observed increases in pressure and flow.
